Dunno and his friends are with us again. Boris Karlov turned out to be the most impatient of the readers. He was so tired of waiting for the sequel that he decided to write it himself. Maintaining the lively and relaxed rhythm of the story set by Nosov, Boris Karlov easily introduces both new heroes and new realities into the narrative. In those parts where the cheerful little men live, time has not stood still. New adventures take place on the Moon, after the departure of Znayka’s rescue expedition. Astronomer Steklyashkin claims that some very strange fragmentary signals are coming from the Moon. But it’s too early to talk about this; we have to figure everything out thoroughly. Our heroes will have new meetings with the lunar shorties. Forward - follow Dunno!